Now that we have covered the somewhat tricky route of tracing gear curves from images (which, by the way, you can use to create meshes out of any image) in part I, let’s have a look at the eMachineShop way. eMachineShop is a free gear designing software from the firm by the same name. They allow you to use their proprietary software for free in personal use, and then you can order the final product from them in a variety of machining finishes. I commend such an approach, especially since the software exports pure STL for our needs.
You can download the software package from eMachineShop.com and install it. When you start it the first time, you see a tutorial screen, but you can turn it off once you have the hang of the software. As it happens, it is very powerful, but a little quirky.
The main window looks like this: (more…)